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2 definitions found
 for DOS/360
From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :

  DOS360
         Disk ??? Operating System / 360 (OS, IBM S/360), "DOS/360"
         

From The Free On-line Dictionary of Computing (30 December 2018) :

  DOS/360
  
      The operating system announced by IBM
     at the low end for the System/360 in 1964 and delivered in
     1965 or 1966.
  
     Following the failure of OS, IBM designed DOS for the low
     end machines, able to run in 16KB(?) and 64KB memory.
  
     DOS/360 used three memory partitions, but it had no serious
     memory protection.  The three partitions were not
     specialised, but frequently one was used for spooling
     punched cards to disk, another one for batch job
     execution and another for spooling disk to printers.
  
     With DOS/VS, introduced in 1970, the number of partitions was
     increased, virtual memory was introduced and the minimum
     memory requirements increased.
  
     Later they released DOS/VSE and ESA/VSE.  DOS/360 successors
     are still alive today (1997) though not as popular as in the
     late 1960s.
  
     Contrary to the Hacker's Jargon File, GECOS was not copied
     from DOS/360.
  
     (1997-09-22)
  

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